ANTA01H3 Chapter Notes - Chapter 2&3: Zygosity, Centromere, Polymerase Chain Reaction
Document Summary
Earliest human ancestors evolved from species that lived ~5-8mya: did not evolve from monkeys/chimps. Fixity of species: notion that species, once created, can never change. James ussher: concluded that earth was created 4004bc. John ray: developed concept of species (groups of organisms that can breed together) and genus. Carolus linnaeus: developed binomial nomenclature (genus and species name used to refer to species) and taxonomy (science that classifies organisms: first to consider humans as animals (by classifying humans as homo sapiens in animal kingdom) Jean-baptiste lamarck: first to explain evolutionary process: body parts would be modified depending on their use. Inheritance of acquired traits / use-disuse theory: eg. giraffe necks grew longer b/c they were stretched (used more often) Georges cuvier: concept of extinction to explain disappearance of animals represented by bones: catastrophism: earth"s geological landscape results from violent cataclysmic events. Organisms would die, and be replaced by more modern organisms. Thomas malthus: pop. growth is restricted by food supply.
